Moderate Cosmetic Ingredient NOAEL Data

Guanidine Phosphate

INCI: GUANIDINE PHOSPHATE

CAS Number
5423-22-3
Function
Buffering agent
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted by default โ€” not restricted under 21 CFR

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

3 study endpoints found for Guanidine Phosphate. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOAEL >=200 mg/kg bw/day oral rat oral REACH
NOAEL 100 mg/kg bw/day oral rat oral REACH
NOAEL 100 mg/kg bw/day oral - oral REACH

Expert Verdict

No CIR review or SCCS opinion available. Anticipated to share the irritation profile of other guanidine salts including skin and eye irritation potential; read-across from guanidine carbonate may be accepted by toxicologists, but standalone data is preferred.

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Concern Level: Moderate

Frequently Asked Questions

Is Guanidine Phosphate safe in cosmetics?

No CIR review or SCCS opinion available. Anticipated to share the irritation profile of other guanidine salts including skin and eye irritation potential; read-across from guanidine carbonate may be accepted by toxicologists, but standalone data is preferred. The EU classifies Guanidine Phosphate as "permitted". Safety rating: MODERATE. 3 toxicological study endpoint(s) are available in our database.

Is Guanidine Phosphate allowed in the EU?

Guanidine Phosphate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Guanidine Phosphate do in cosmetics?

Guanidine Phosphate functions as: Buffering agent. It is classified as a cosmetic ingredient in our database. CAS number: 5423-22-3.

What is the Margin of Safety for Guanidine Phosphate?

not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

What is the NOAEL for Guanidine Phosphate?

The NOAEL (No Observed Adverse Effect Level) for Guanidine Phosphate is >=200 mg/kg bw/day based on a oral study via oral route in rat. A total of 3 study endpoints are available. Source: REACH.

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